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305715 (2009 BU188)
Classification: Main-belt Asteroid          SPK-ID: 2305715
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04984163344459475 7.2795e-08  
a 3.045481809042391 3.8199e-08 au
q 2.893690021053919 2.3434e-07 au
i 9.419479923437358 6.7237e-06 deg
node 183.9832478089611 3.9503e-05 deg
peri 66.9167974008339 6.9557e-05 deg
M 17.81964682146034 5.5864e-05 deg
tp 2459104.409814233969
(2020-Sep-11.90981423)
0.0003015 TDB
period 1941.254348212513
5.31
3.6523e-05
9.999e-08
d
yr
n .1854471055436318 3.4891e-09 deg/d
Q 3.197273597030864 4.0103e-08 au
  Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      5905 days (16.17 yr)  
   first obs. used      2004-04-22  
   last obs. used      2020-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54348  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:56:14  

Additional Information
 Earth MOID = 1.89568 au 
 Jupiter MOID = 1.81675 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457890.5 (2017-May-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04880502631594083 7.2979e-08  
q 2.897313161818062 2.351e-07 au
tp 2457158.266353633796
(2015-May-15.76635363)
0.000313 TDB
node 184.0166212523381 3.9496e-05 deg
peri 65.9236290641369 7.0215e-05 deg
i 9.419663099334294 6.7256e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      5905 days (16.17 yr)  
   first obs. used      2004-04-22  
   last obs. used      2020-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54348  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:56:14  

Additional Information
 Jupiter MOID = 1.81675 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.325941842154706E-15 -1.696253178785139E-14 -6.331996570635262E-12 7.067441060737608E-15 -1.151954181463918E-12 -1.088664901575086E-14
q -1.696253178785139E-14 5.527086862029787E-14 1.632829971868525E-11 -1.993256363321877E-14 3.025577965529357E-12 3.787787754045387E-14
tp -6.331996570635262E-12 1.632829971868525E-11 9.796922937663655E-8 3.83299675559372E-11 1.822838747375936E-8 2.240147208518308E-11
node 7.067441060737608E-15 -1.993256363321877E-14 3.83299675559372E-11 1.559960214514227E-9 -1.530830870143971E-9 1.331572056187734E-10
peri -1.151954181463918E-12 3.025577965529357E-12 1.822838747375936E-8 -1.530830870143971E-9 4.930136475906647E-9 -1.270102709849866E-10
i -1.088664901575086E-14 3.787787754045387E-14 2.240147208518308E-11 1.331572056187734E-10 -1.270102709849866E-10 4.523310426453422E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.26   n/a MPCxxxxx  

305715 (2009 BU188)          Discovered 2009-Jan-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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